INTEGRATED CIRCUITS SA639 Low voltage mixer FM IF system with filter amplifier and data switch Product specification IC17 Data Handbook 1998 Feb 10 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch DESCRIPTION SA639 PIN CONFIGURATION The SA639 is a low-voltage high performance monolithic FM IF system with high-speed RSSI incorporating a mixer/oscillator, two wideband limiting intermediate frequency amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), fast RSSI op amps, voltage regulator, wideband data output, post detection filter amplifier and data switch. The SA639 is available in 24-lead TSSOP (Thin shrink small outline package). The SA639 was designed for high bandwidth portable communication applications and will function down to 2.7V. The RF section is similar to the famous NE605. The data output provides a minimum bandwidth of 1MHz to demodulate wideband data. The RSSI output is amplified and has access to the feedback pin. This enables the designer to level adjust the outputs or add filtering. The post-detection amplifier may be used to realize a low pass filter function. A programmable data switch routes a portion of the data signal to an external integration circuit that generates a data comparator reference voltage. SA639 incorporates a power down mode which powers down the device when Pin 8 is high. Power down logic levels are CMOS and TTL compatible with high input impedance. RFIN 1 24 MIXER OUT RF BYPASS 2 23 IF AMP DECOUPLING XTAL OSC (EMITTER) 3 22 IF AMP IN XTAL OSC (BASE) 4 21 IF AMP DECOUPLING VCC 5 20 IF AMP OUT RSSI FEEDBACK 6 19 GND RSSI OUT 7 18 LIMITER IN POWER DOWN CONTROL 8 17 LIMITER DECOUPLING DATA OUT 9 16 LIMITER DECOUPLING POSTAMP IN 10 15 LIMITER OUT POSTAMP OUT 11 14 QUADRATURE IN SWITCH CONTROL 12 13 SWITCH OUT SR00030 Figure 1. Pin Configuration APPLICATIONS • XTAL oscillator effective to 150MHz (L.C. oscillator to 1GHz local • DECT (Digital European Cordless Telephone) • FSK and ASK data receivers oscillator can be injected) • 92dB of IF Amp/Limiter power gain • 25MHz limiter small signal bandwidth • Temperature compensated logarithmic Received Signal Strength FEATURES • VCC = 2.7 to 5.5V • Low power consumption: 8.6mA typ at 3V • Wideband data output (1MHz min.) • Fast RSSI rise and fall times • Mixer input to >500MHz • Mixer conversion power gain of 9.2dB and noise figure of 11dB at Indicator (RSSI) with a dynamic range in excess of 80dB • RSSI output internal op amp • Post detection amplifier for filtering • Programmable data switch • Excellent sensitivity: 2.24µV into 50Ω matching network for 10dB SNR (Signal to Noise Ratio) with RF at 110MHz and IF at 9.8MHz 110MHz • ESD hardened • Power down mode ORDERING INFORMATION DESCRIPTION 24-Pin Plastic TSSOP (Thin Shrink Small Outline Package) 1998 Feb 10 2 TEMPERATURE RANGE ORDER CODE DWG # -40 to +85°C SA639DH SOT-355 853-1792 18944 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch SA639 BLOCK DIAGRAM 24 23 22 21 20 19 18 17 16 15 14 13 11 12 GND IF AMP LIMITER MIXER – + VCC E 1 2 3 QUAD FAST RSSI OSCILLATOR 4 5 + – DATA RSSI B + – PWR DWN 6 7 8 9 10 SR00031 Figure 2. Block Diagram ABSOLUTE MAXIMUM RATINGS SYMBOL PARAMETER VCC Single supply voltage VIN Voltage applied to any other pin1 TSTG TA RATING UNITS -0.3 to 6 V -0.3 to (VCC+0.3) Storage temperature range -65 to +150 Operating ambient temperature range SA6392 -40 to +85 V °C °C NOTE: 1. Except logic input pins (Pins 8 and 12) which can have 6V maximum. 2. θJA Thermal impedance (DH package) 117°C/W DC ELECTRICAL CHARACTERISTICS VCC = +3V, TA = 25°C; unless otherwise stated. LIMITS SYMBOL PARAMETER TEST CONDITIONS SA639 MIN -3σ UNITS +3σ Power supply voltage range 5.5 V ICC DC current drain Pin 8 = LOW, Pin 12 = HIGH 8.33 8.6 8.87 10 mA ICC Standby Pin 8 = HIGH, Pin 12 = HIGH 131.9 140 148.1 500 µA Input level tON Power up time tOFF Power down time Power up settling time Switch closed Switch open (output tri-state) Input current 3.0 MAX VCC Input current 2.7 TYP Pin 8 = LOW 10 Pin 8 = HIGH 4 Pin 8 = LOW 0 0.3VCC Pin 8 = HIGHNO TAG 0.7VCC 6 RSSI valid (10% to 90%) 5 Data output valid 100 µs 200 µs Pin 12 = LOW, PIN 8 = LOW 0 0.3 VCC V Pin 12 = HIGH 0.7 VCC 6 V Pin 12 = LOW 10 Pin 12 = HIGH 4 Switch activation time 0.5 1 NOTE: 1. When the device is forced in power down mode via Pin 8, the Data Switch will output a voltage close to 1.6V and the state of the switch control input will have no effect. 1998 Feb 10 V µs 10 RSSI invalid (90% to 10%) µA 3 µA µs Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch SA639 AC ELECTRICAL CHARACTERISTICS TA = 25°C; VCC = +3V, unless otherwise stated. RF frequency = 110.592MHz ;LO frequency = 120.392MHz; IF frequency = 9.8MHz; RF level = -45dBm; FM modulation = 576kHz with ±288kHz peak deviation, discriminator tank circuit Q=4. The parameters listed below are tested using automatic test equipment to assure consistent electrical characteristics. The limits do not represent the ultimate performance limits of the device. Use of an optimized RF layout will improve many of the listed parameters. LIMITS SYMBOL PARAMETER TEST CONDITIONS SA639 MIN -3σ TYP UNITS +3σ MAX Mixer/Osc section (ext LO = -14dBm) fIN fOSC Input signal frequency 500 External oscillator (buffer) 0.2 Noise figure at 110MHz Third-order input intercept point Matched f1=110.592MHz; f2=110.852MHz Conversion power gain RF input resistance 6 MHz 10.4 11 11.6 dB -11 -9.5 -8 dBm 9.2 11.1 dB 8.6 Single-ended input 800 Ω 3.5 pF (Pin 24) 330 Ω RF input capacitance Mixer output resistance MHz 500 IF section IF amp gain 38.86 40 41.14 Limiter gain 50.44 52 53.56 Input limiting -3dB Test at Pin 22 dB dB –100 dBm IF input impedance 330 Ω IF output impedance 330 Ω Limiter input impedance 330 Ω Limiter output impedance 300 Ω Limiter output level with no load 130 mVRMS RF/IF section (ext LO = -14dBm) Data level RL = 10kΩ, CL = 30pF 260 Data bandwidth S/N Signal-to-noise ratio AM rejection RF RSSI output with buffer RF RSSI output rise time No modulation for noise 80% AM 1kHz 360 2.4 2.7 MHz 56.1 60 63.9 dB 34.8 36 37.2 RF level = -90dBm 0 0.232 0.4 0.568 0.75 RF level = -45dBm 0.5 0.732 0.9 1.068 1.3 RF level = -10dBm 0.8 1.032 1.2 1.368 1.6 RF level = -45dBm 0.8 (no RSSI bypass capacitor) RF level = -28dBm 0.8 V µs IF frequency = 9.8MHz (10kHz pulse, w/ 9.8MHz filter) RF level = -45dBm 2.0 (no RSSI bypass capacitor) RF level = -28dBm 1.8 RSSI range µs 80 dB ±1.5 RSSI accuracy 1998 Feb 10 dB IF frequency = 9.8MHz (10kHz pulse, w/ 9.8MHz filter) RF RSSI output fall time mVP-P 2.1 dB SINAD RF level = -85dBm 9.45 12 14.55 dB S/N RF level = -100dBm 5.8 10 14.2 dB 4 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch AC ELECTRICAL CHARACTERISTICS SA639 (Continued) LIMITS SYMBOL PARAMETER TEST CONDITIONS SA639 MIN UNITS -3σ TYP +3σ 11.7 12.8 13.8 MAX Post detection filter amplifier Amplifier 3dB bandwidth AC coupled: RL = 10kΩ, CL = 33pF Amplifier gain AC coupled: RL = 10kΩ, VOUT DC = 1.6V -0.2 dB Slew rate AC coupled: RL = 10kΩ, CL = 33pF 2.4 V/µs Input resistance MHz 300 kΩ Input capacitance 3 Output impedance 150 Output load resistance AC coupled Output load capacitance1 AC coupled 800 5 1.5 Ω kΩ 30 DC output level2 pF 1.682 1.7 pF 1.718 1.9 V Data switch DC input voltage range3 1.2 1.6 AC input swing 2.0 400 Input impedance V mVP-P 100 kΩ Input capacitance 5 Output load resistance pF Ω 500 Through Mode (Pin 12 = LOW) AC voltage gain4 Output drive capability Slew rate voltage2, 6 dB 3 mA VOUT DC = 1.6V Static offset voltage5 Dynamic offset -1.5 Sink/source, VOUT DC = 1.6V >14.0 VIN DC = 1.2 to 2.0V -0.6 0.30 V/µs 1.2 ±5 VIN DC = 1.4 to 2.0V; VCC = 3.0 to 5.0V; RF level = -70 to -40 dBm -7 +7 VIN DC = 1.4 to 2.0V; VCC = 3.0 to 5.0V; RF level = -40 to -5 dBm -10 +10 mV mV Tri-State Mode (Pin 12 = HIGH) Output leakage current VOUT DC = 1.2 to 2.0V 9.5 20 30.5 100 nA NOTES: 1. Includes filter feedback capacitance, comparator input capacitance. PCB stray capacitances and switch input capacitance. 2. Demodulator output DC coupled with Post Detection Filter Amplifier input and the demodulator tank exactly tuned to center frequency. 3. Includes DC offsets due to frequency offsets between Rx and Tx carrier and demodulator tank offset due to mis-tuning. 4. With a 400mVP-P sinusoid at 600kHz driving Pin 10. Output load resistance 500Ω in series with 10nF. 5. With a DC input and capacitor in the RC load fully charged. 6. The switch is closed every 10ms for a duration of 40µs. The DC offset is determined by calculating the difference of 2 DC measurements, which are determined as follows: 1) The first DC value is measured at the integrating capacitor of the switch when the switch is in the closed position immediately before it opens. The value to be measured is in the middle of the peak-to-peak excursion of the superimposed sine-wave. (DClow + (DChigh – DClow)/2). 2) The second DC value (calculated as above) is measured at Pin 11 immediately after the switch opens, and is the DC value which gives the largest DC offset to the first DC measurement within a 400µs DECT burst. Minimum and maximum limits are not tested, however, they are guaranteed by design and characterization using an optimized layout and application circuit. 7. Standard deviations are measured based on application of 60 parts. 1998 Feb 10 5 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch frequency response influence on the filter group delay characteristic at a minimum. At the center of the carrier it is mandatory to provide a filter output DC bias voltage of 1.6V in order to be within the input common mode range of the external data comparator. The filter output DC bias voltage specification holds for an exactly center tuned demodulator tank and for the demodulator output connected to the filter amplifier input. CIRCUIT DESCRIPTION The SA639 is an IF signal processing system suitable for second IF or single conversion systems with input frequency as high as 1GHz. The bandwidth of the IF amplifier is about 40MHz, with 44dB(v) of gain from a 50Ω source. The bandwidth of the limiter is about 28MHz with about 58dB(v) of gain from a 50Ω source. However, the gain/bandwidth distribution is optimized for 9.8MHz, 330Ω source applications. The overall system is well-suited to battery operation as well as high performance and high quality products of all types, such as digital cordless phones. Data Switch The SA639 incorporates an active data switch used to derive the data comparator reference voltage by means of an external integration circuit. The data switch is typically closed for 10µs before and during reception of the synchronization word pattern, and is otherwise open. The external integration circuit is formed by an R/C low pass with a time constant of 5 to 10µs. The input stage is a Gilbert cell mixer with oscillator. Typical mixer characteristics include a noise figure of 11dB, conversion power gain of 9.2dB, and input third-order intercept of -9.5dBm. The oscillator will operate in excess of 1GHz in L/C tank configurations. Hartley or Colpitts circuits can be used up to 100MHz for xtal configurations. Butler oscillators are recommended for xtal configurations up to 150MHz. The active data switch provides excellent tracking behavior over a DC input range of 1.2 to 2.0V. For this range with an RC load (no static current drawn), the DC output voltage will not differ more than ±5mV from the input voltage. Since the active data switch is designed to behave like a non-linear charge pump (to allow fast tracking of the input signal without slew rate limitations under dynamic conditions of a 576kHz input signal with 400mVP-P and the RC load), the output signal will have a 340mVP-P output with a DC average that will not vary from the input DC average by more than ±10mV. The output of the mixer is internally loaded with a 330Ω resistor permitting direct connection to a 330Ω ceramic filter. The input resistance of the limiting IF amplifiers is also 330Ω. With most 330Ω ceramic filters and many crystal filters, no impedance matching network is necessary. To achieve optimum linearity of the log signal strength indicator, there must be a 6dB(v) insertion loss between the first and second IF stages. If the IF filter or interstage network does not cause 6dB(v) insertion loss, a fixed or variable resistor can be added between the first IF output (Pin 20) and the interstage network. The data switch is able to sink/source 3mA from/to the external integration circuit in order to minimize the settling time after long power-down periods (DECT paging mode). In addition, during power-down conditions a reference voltage of approximately 1.6V will be used as the input to the switch. The switch will be in a low current mode to maintain the voltage on the external RC load. This will further reduce the settling time of the capacitor after power-up. It should be noted that during power-down the switch can only source and sink a trickle current (10µA). Thus, the user should make sure that other circuits (like the data comparator inputs) are not drawing current from the RC circuit. The signal from the second limiting amplifier goes to a Gilbert cell quadrature detector. One port of the Gilbert cell is internally driven by the IF. The other output of the IF is AC-coupled to a tuned quadrature network. This signal, which now has a 90° phase relationship to the internal signal, drives the other port of the multiplier cell. Overall, the IF section has a gain of 90dB. For operation at intermediate frequency at 9.8MHz. Special care must be given to layout, termination, and interstage loss to avoid instability. The data switch provides a slew rate better than 1V/µs in order to track with system DC offset from receive slot to receive slot (DECT idle lock or active mode). When the data switch is opened the output is in a tri-state mode with a leakage current of less than 100nA. This reduces discharge of the external integration circuit. When powered-down, the data switch will output a reference of approximately 1.6V to maintain a charge on the external RC circuit. The demodulated output (DATA) of the quadrature is a low impedance voltage output. This output is designed to handle a minimum bandwidth of 1MHz. This is designed to demodulate wideband data, such as in DECT applications. Post Detection Filter Amplifier The filter amplifier may be used to realize a group delay optimized low pass filter for post detection. The filter amplifier can be configured for Sallen & Key low pass with Bessel characteristic and a 3dB cut frequency of about 800kHz. A Receive Signal Strength Indicator (RSSI) completes the circuitry. The output range is greater than 80dB and is temperature compensated. This log signal strength indicator exceeds the criteria for DECT cordless telephone. This signal drives an internal op amp. The op amp is capable of rail-to-rail output. It can be used for gain, filtering, or 2nd-order temperature compensation of the RSSI, if needed. The filter amplifier provides a gain of 0dB. The output impedance is less than 500Ω in order to reduce frequency response changes as a result of amplifier load variations. The filter amplifier has a 3dB bandwidth of at least 4 MHz in order to keep the amplifier’s 1998 Feb 10 SA639 NOTE: dB(v) = 20log VOUT/VIN 6 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch PIN FUNCTIONS SA639 All DC voltages measured with Pin 8 = Pin 12 = Pin 19 = 0V, Pin 5 = 3V and Pin 9 connected to Pin 10. PIN PIN DC V No. MNEMONIC PIN PIN DC V No. MNEMONIC EQUIVALENT CIRCUIT EQUIVALENT CIRCUIT VCC RSSI 1 RF IN +1.07 6 0.8k FEEDBACK +0.20 — 6 + 0.8k 1 2 VCC RF 2 BYPASS RSSI +1.07 7 OUT +0.20 + 7 — R XTAL 3 OSC POWER 18k +1.57 8 DOWN 0.00 8 4 R MIX VCC 3 XTAL 4 OSC 9 5 5 VCC DATA 150µA +2.32 OUT VREF +3.00 +1.7 9 POST 10 AMP 10 +1.70 IN BANDGAP 20µA SR00032 Figure 3. Pin Functions 1998 Feb 10 7 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch SA639 PIN FUNCTIONS (continued) PIN PIN DC V No. MNEMONIC PIN PIN DC V No. MNEMONIC EQUIVALENT CIRCUIT EQUIVALENT CIRCUIT LIMITER 16 DECOUP +1.23 POST 18 LIMITER AMP 11 OUT 17 +1.70 COUPLING 330Ω +1.23 11 50µA LIMITER 18 IN 19 +1.23 16 17 GND 0 R SWITCH 12 CONTROL 0.00 12 IF 20 AMP OUT R 140Ω +1.22 20 8.8k IF AMP 21 SWITCH 13 OUT +1.70 DECOUP 13 +1.22 22 330Ω IF 22 AMP IN +1.22 50µA 80k 21 23 14 QUAD 14 IN +3.00 IF AMP 20µA 23 DECOUP 110Ω LIMITER 15 OUT +1.22 24 MIXER +1.35 24 OUT 15 +1.03 400µA 8.8k SR00033 Figure 4. Pin Functions (cont.) 1998 Feb 10 8 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch SA639 C28 0.1µF MIXER OUT 1.5nF C1 5–30pF SMA RF IN J1 1nF 330nH 110.592MHz +/–288kHz C2 15pF 68pF L1 180nH 680nH U1 1 RF IN MIXER OUT C26 0.1µF 24 68pF 330pF C3 10nF C5 SMA 120.392MHz LO IN @–10dBm 5–30pF 2 C4 1nF IF AMP DECOUPLING 1 RF BYPASS 23 0.1µF J2 nc C6 39pF L2 120nH 3 XTAL OSC (EMITTER) 4 XTAL OSC (BASE) IF IN 22 348Ω 0.1µF +3V IF AMP DECOUPLING 2 50Ω 21 R8 10 0.1µF VCC + C7 15µF 5 VCC 6 RSSI FEEDBACK IF OUT 20 GROUND 19 C8 100nF IF AMP OUT 1kΩ 100pF GND IF AMP IN 6.49kΩ 50Ω 100pF 330pF 7 RSSI OUT 8 PD CTRL LIMITER IN 18 LIMITER DEC1 17 560Ω 680nH RSSI PWR DWN 0.1µF 6.49kΩ LIMITER IN 2.2µF 9 + DATA OUT RL 10kΩ DATA OUT LIMITER DEC2 16 348Ω 50Ω C18 0.1µF CL 30pF 10 POSTAMP IN LIMITER OUT C19 0.1µF 15 0.1µF 1kΩ J3 R7 5.6kΩ R6 5.6kΩ 11 POSTAMP OUT QUAD IN 14 12 SW CTRL SW OUT 13 LIMITER OUT 50Ω POSTAMP IN 2.2µF + POSTAMP OUT RL 10kΩ CL 33pF SA639 R8 510 C13 10nF C14 33pF SW CTRL C15 6.8pF 10k SW OUT R9 1.3k C16 5-30pF C17 15pF L3 4.7µH QUAD IN DC SR00034 Figure 5. SA639 Test Circuit 1998 Feb 10 9 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch SA639 TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Temperature and VCC Standby Supply Current vs Temperature and VCC 12 0.5 0.45 11 CURRENT (mA) CURRENT (mA) 0.4 10 VCC = 5.5V 9 8 0.3 VCC = 5.5V 0.25 0.2 VCC = 3V 0.15 VCC = 2.7V VCC = 3V 0.35 0.1 7 VCC = 2.7V 0.05 6 -40 0 25 70 0 -40 85 TEMPERATURE (°C) 0 25 70 85 TEMPERATURE (°C) Mixer Input IP3 vs Temperature and VCC Mixer Power Gain vs Temperature and VCC RF = -40dBm, 110.392MHz RF = -40dBm, 110.392MHz LO = -10dBm, 120.592MHz LO = -10dBm, 120.592MHz 15 0 14 -2 VCC = 5.5V 13 -4 VCC = 3V 12 -6 -8 10 VCC = 5.5V 9 VCC = 3V IP3 (dB) GAIN (dB) 11 VCC = 2.7V -10 -12 -14 8 -16 7 -18 6 -20 VCC = 2.7V 5 -40 -22 0 25 70 85 -40 0 25 TEMPERATURE (°C) 70 85 TEMPERATURE (°C) Limiter and IF Gain vs Temperature and VCC IF Input = -90dBm, 9.8MHz Mixer NF vs Temperature and VCC LIM Input = -100dBm, 9.8MHz IF = 11MHz 15 60 14 58 56 13 VCC = 2.7V 53 VCC = 5V GAIN (dB) NF (dB) 12 11 10 VCC = 3V 9 7 40 6 38 5 36 34 -40 25 70 85 VCC = 2.7V 46 44 42 0 VCC = 3V 50 48 8 -40 VCC = 5.5V LIMITER 54 IF AMP VCC = 5.5V VCC = 3V 0 25 VCC = 2.7V 70 85 TEMPERATURE (°C) TEMPERATURE (°C) SR00035 Figure 6. Typical Performance Characteristics 1998 Feb 10 10 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch SA639 TYPICAL PERFORMANCE CHARACTERISTICS (continued) SA639 Receiver RF Performance Relative Data Output Level, THD, Noise and AM Rejection vs Temperature RF = 110kHz, LO = 119.8MHz, Data = 430.76mVP-P VCC = 3V, T = 25°C, 576kHz sine 10 1.3 0 1.2 Data 20 -10 0.3 85 TEMPERATURE (°C) RSSI vs RF Level and VCC Temperature = 25°C VCC = 3V 2 1.8 1.8 1.6 1.6 1.4 1.4 1.2 VOLTAGE (V) VOLTAGE (V) 0 RF INPUT LEVEL (dBm) RSSI vs RF Level and Temperature 2 -10 70 0.4 -90 -20 25 -80 -30 0 0.5 NOISE -40 -100 -40 0.6 -70 -50 NOISE -80 0.7 -60 -60 -60 0.8 AM REJ -50 -70 THD 0.9 -40 -80 -40 -90 AM Rej -100 -20 1 THD+N -30 -110 Data 1.1 RSSI -20 RELATIVE TO DATA OUTPUT (dB) RELATIVE TO DATA OUTPUT (dB) 0 -40°C 25°C 1 0.8 85°C VCC = 5.5V 1.2 1 VCC = 3V 0.8 VCC = 2.7V 0.6 0.6 0.4 0.4 0.2 0.2 0 -110 0 -110 -100 -90 -80 -70 -60 -50 RF LEVEL (dBm) -40 -30 -20 Data Output DC Voltage vs Temperature and VCC 2.2 650 2.1 600 VOLTAGE (mVp-p) 2 VOLTAGE (Vdc) VCC = 5.5V 1.9 VCC = 3V 1.7 -60 -50 -40 -30 -20 -10 VCC = 5.5V 550 500 VCC = 3V 450 VCC = 2.7V 400 300 250 1.4 0 25 70 200 -40 85 0 25 TEMPERATURE (°C) TEMPERATURE (°C) Figure 7. Typical Performance Characteristics (cont.) 1998 Feb 10 -70 350 VCC = 2.7V 1.5 1.3 -40 -80 Data Output AC Voltage vs Temperature and VCC 700 1.6 -90 RF LEVEL (dBm) 2.3 1.8 -100 -10 11 70 85 SR00036 RSSI (V) RF = 110MHz, Level = -50dBm Dev. = 288kHz, LO = 119.8MHz, -14dBm, VCC = 3V Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch SA639 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Data Output -3dB Bandwidth vs Temperature and VCC Switch -3dB Bandwidth vs Temperature and VCC 3.5 10 3.3 9 3.1 8 FREQUENCY (MHz) FREQUENCY (MHz) 2.9 2.7 VCC = 5.5V 2.5 2.3 VCC = 3V 2.1 VCC = 2.7V 1.9 7 6 VCC = 5.5V 5 4 VCC = 2.7V VCC = 3V 3 2 1.7 1.5 -40 0 25 70 1 -40 85 0 25 TEMPERATURE (°C) 70 85 TEMPERATURE (°C) Post Detection Amplifier -3dB Bandwidth vs Temperature and VCC Post Detection Amplifier vs Temperature and VCC 16 0 9 -0.1 8 -0.2 VCC = 2.7V 7 FREQUENCY (MHz) GAIN (dB) -0.3 VCC = 3V -0.4 -0.5 VCC = 5.5V -0.6 VCC = 5.5V 5 4 VCC = 2.7V VCC = 3V 3 2 -0.7 1 -0.8 -40 6 0 25 70 -40 85 0 25 70 85 TEMPERATURE (°C) TEMPERATURE (°C) Switch Output to Input Offset Voltage vs Temperature and VCC Switch Output Leakage Current vs Temperature and VCC 16 60 14 50 12 VCC = 5.5V 10 40 30 VOLTAGE (mV) CURRENT (nA) 8 VCC = 5.5V 20 VCC = 3V 10 4 0 -6 -20 -8 -40 0 25 70 VCC = 2.7V -4 -10 -40 VCC = 3V 2 -2 VCC = 2.7V 0 6 85 0 TEMPERATURE (°C) 70 85 SR00037 Figure 8. Typical Performance Characteristics (cont.) 1998 Feb 10 25 TEMPERATURE (°C) 12 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch 1 200mV 2 5.00mV –376ns 200ns/ SA639 1 RUN RSSI OUTPUT 90% tr = 0.79µs RF INPUT 2 f = 110MHz LEVEL = -28dBm PULSE MODULATED @ 10kHz t1 = –376.0ns ∆t = 788.0ns t2 = 412.0ns 1/∆t = 1.269MHz SR00038 Figure 9. SA639 RSSI Rise Time 1 200mV 2 5.00mV –1.36us 500ns/ 1 RUN RSSI OUTPUT tf = 1.89µs 10% 2 RF INPUT f = 110MHz LEVEL = -28dBm PULSE MODULATED @ 10kHz t1 = –1.36.0µs t2 = 440.0ns ∆t = 1.800µs 1/∆t = 555.6kHz SR00039 Figure 10. SA639 RSSI Fall Time 1998 Feb 10 13 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch 1 50mV 2 50mV 4 1.0V 2µs/div SA639 RF = 110MHz DEV = 288kHz DATA RATE = 576kHz SINE 1 LO = 119.8MHz POSTAMP OUTPUT VCC = 3V, T = 27°C DATA SWITCH OUTPUT 4 2 SWITCH ENABLE ALL CHANNELS ARE DC COUPLED DATA SWITCH OPEN SR00040 Figure 11. SA639 System Dynamic Response 1 500mV 2 2.00V 0.00s 50.0ns/ 2 RUN VCC = 3V, T = 25°C SWITCH INPUT = 1.6VDC SWITCH OUTPUT 1 SWITCH ENABLE 2 V1 (1) = 0.000V V2 (1) = 1.609V ∆V (1) = 1.609V SR00041 Figure 12. SA639 Data Switch Activation Time 1998 Feb 10 14 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm 1998 Feb 10 15 SA639 SOT355-1 Philips Semiconductors Product specification Low voltage mixer FM IF system with filter amplifier and data switch SA639 Data sheet status Data sheet status Product status Definition [1] Objective specification Development This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. Preliminary specification Qualification This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make chages at any time without notice in order to improve design and supply the best possible product. Product specification Production This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. [1] Please consult the most recently issued datasheet before initiating or completing a design. Definitions Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Disclaimers Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 print code Document order number: 1998 Feb 10 16 Date of release: 2-98 9397 750 03301